Ok I have the solution which was provided by Windows Central Daniel Rabino. You have to turn off the Aptx audio in setting to get the full 20 hours to show in the audio app. The app and headphones now show 20 hours when fully charged. we can close this out.
Surface Headphones 2 Battery Issue
I have the surface headphones 2 and the battery is only charging to 17 hours. Even after a full charge and no use. It shows the same 17 hours on the surface audio app. I have already tried to update firmware but no updates available. Also I returned my first pair and this second pair are doing the same thing. Anyone have a resolution? Is this a known issue?
Surface | Surface Headphones | Settings
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Anonymous
2020-07-24T11:55:48+00:00 Have you tried to use the surface audio app from a PC?
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Anonymous
2020-07-30T12:13:13+00:00 Have you tried to use the surface audio app from a PC?
Thank you! That worked for me. Sorry it took so long for a response, forgot to check “notify me when someone respnds.” I appreciate your time.
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Anonymous
2020-07-30T12:36:03+00:00 Awesome glad it worked for you